At 24 h after injection, PET/CT, ex vivo γ-counting, and autoradiography demonstrated that there was significantly higher 89Zr-DFO-bexmarilimab uptake in unilateral ureteric obstruction–operated fibrotic renal cortex, characterized by abundant CLEVER-1–positive cells, than in contralateral or healthy kidneys. The gene discussed is STAB1; the disease is Ureteral obstruction.